package org.jeecg.common.exception;

import lombok.extern.slf4j.Slf4j;
import org.apache.shiro.authz.AuthorizationException;
import org.apache.shiro.authz.UnauthorizedException;
import org.jeecg.common.api.vo.Result;
import org.jeecg.common.util.oConvertUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.dao.DataIntegrityViolationException;
import org.springframework.dao.DuplicateKeyException;
import org.springframework.data.redis.connection.PoolException;
import org.springframework.validation.BindException;
import org.springframework.validation.ObjectError;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.multipart.MaxUploadSizeExceededException;
import org.springframework.web.servlet.NoHandlerFoundException;

import javax.servlet.http.HttpServletResponse;
import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import java.util.List;
import java.util.stream.Collectors;

/**
 * 异常处理器
 *
 * @Author scott
 * @Date 2019
 */
@RestControllerAdvice
@Slf4j
public class JeecgBootExceptionHandler {

	@Value("${spring.profiles.active}")
	private String system;

	/**
	 * 处理自定义异常
	 */
	@ExceptionHandler(JeecgBootException.class)
	public Result<?> handleRRException(JeecgBootException e){
		log.error(e.getMessage(), e);
		return Result.error(e.getMessage());
	}

	@ExceptionHandler(NoHandlerFoundException.class)
	public Result<?> handlerNoFoundException(Exception e) {
		log.error(e.getMessage(), e);
		return Result.error(404, "路径不存在，请检查路径是否正确");
	}

	@ExceptionHandler(DuplicateKeyException.class)
	public Result<?> handleDuplicateKeyException(DuplicateKeyException e){
		log.error(e.getMessage(), e);
		return Result.error("数据库中已存在该记录");
	}

	@ExceptionHandler({UnauthorizedException.class, AuthorizationException.class})
	public Result<?> handleAuthorizationException(AuthorizationException e){
		log.error(e.getMessage(), e);
		return Result.noauth("没有权限，请联系管理员授权");
	}

	@ExceptionHandler(Exception.class)
	public Result<?> handleException(Exception e){
		log.error(e.getMessage(), e);
		return Result.error("操作失败，"+e.getMessage());
	}

	@ExceptionHandler(MyException.class)
	public Result<?> handleMyException( MyException e  , HttpServletResponse response){
		//response.setStatus(600);//自定义
		return Result.error(510,"操作失败,"+e.getMessage());
	}

	/**
	 * @Author 政辉
	 * @param e
	 * @return
	 */
	@ExceptionHandler(HttpRequestMethodNotSupportedException.class)
	public Result<?> HttpRequestMethodNotSupportedException(HttpRequestMethodNotSupportedException e){
		StringBuffer sb = new StringBuffer();
		sb.append("不支持");
		sb.append(e.getMethod());
		sb.append("请求方法，");
		sb.append("支持以下");
		String [] methods = e.getSupportedMethods();
		if(methods!=null){
			for(String str:methods){
				sb.append(str);
				sb.append("、");
			}
		}
		log.error(sb.toString(), e);
		//return Result.error("没有权限，请联系管理员授权");
		return Result.error(405,sb.toString());
	}

	 /**
	  * spring默认上传大小100MB 超出大小捕获异常MaxUploadSizeExceededException
	  */
    @ExceptionHandler(MaxUploadSizeExceededException.class)
    public Result<?> handleMaxUploadSizeExceededException(MaxUploadSizeExceededException e) {
    	log.error(e.getMessage(), e);
        return Result.error("文件大小超出10MB限制, 请压缩或降低文件质量! ");
    }

    @ExceptionHandler(DataIntegrityViolationException.class)
    public Result<?> handleDataIntegrityViolationException(DataIntegrityViolationException e) {
    	log.error(e.getMessage(), e);
        return Result.error("字段太长,超出数据库字段的长度");
    }

    @ExceptionHandler(PoolException.class)
    public Result<?> handlePoolException(PoolException e) {
    	log.error(e.getMessage(), e);
        return Result.error("Redis 连接异常!");
    }

	@ExceptionHandler(MethodArgumentNotValidException.class)
	public Result<?> handleBindException(MethodArgumentNotValidException ex) { //@ResponseBody
		//FieldError fieldError = ex.getBindingResult().getFieldError();
		//参数校验异常
		List<ObjectError> ErrorList = ex.getBindingResult().getAllErrors();
		assert ErrorList != null;
		log.info("handleBindException abnormal parameter verification:{}", ErrorList);
		return bindingResult(ErrorList);
	}


	@ExceptionHandler(BindException.class)
	public Result<?> handleBindException(BindException ex) {//@ResponseBody
		//校验 除了 requestbody 注解方式的参数校验 对应的 bindingresult 为 BeanPropertyBindingResult
		//必填校验异常
		List<ObjectError> ErrorList = ex.getBindingResult().getAllErrors();
		assert ErrorList != null;
		log.info("handleBindException required check exception:{}", ErrorList);
		return bindingResult(ErrorList);
	}

	//处理请求参数格式错误 @RequestParam上validate失败后抛出的异常是javax.validation.ConstraintViolationException
	@ExceptionHandler(ConstraintViolationException.class)
	public Result<?> ConstraintViolationExceptionHandler(ConstraintViolationException ex) {
		String message = ex.getConstraintViolations()
				.stream()
				.map(ConstraintViolation::getMessage)
				.collect(Collectors.joining());
		return Result.error(message);
	}


	private Result<?> bindingResult(List <ObjectError> ErrorList) {
		String msg = "参数不合法";
		if(!oConvertUtils.isEqual(system, "prod")) {
			StringBuilder errorSB = new StringBuilder();
			for (ObjectError fieldError : ErrorList) {
				errorSB.append(fieldError.getDefaultMessage())
						.append("。");
			}
			msg = errorSB.toString();
		}
		return Result.error(msg);
	}
}
